Williamson et al. previously showed that a strain of Enterococcus faecium with low-level resistance to vancomycin grown in the presence of one-half the MIC of vancomycin showed bizarre cell forms with abnormal septa without apparent cell division (3). In the current work, 10 strains of E. faecium susceptible to vancomycin (MIC, ,2 mg/ml) and 10 resistant strains (MIC, .400 mg/ml) which were als...

BACKGROUND Trichomonas vaginalis is considered one of the main causes of vulvovaginitis in women. Metronidazole with vast side effects is now the drug of choice for treatment of this infection. In an attempt to find an alternative drug, the effect of Eucalyptus camaldulensis on this parasite was shown in previous studies. In this investigation, the effect of different extracts of this plant on ...

We have demonstrated previously a pronounced increase in the expression of hepatocyte growth factor (HGF) (Z. Hu, R. P. Evarts, K. Fujio, E. R. Marsden, and S. S. Thorgeirsson, Am. J. Pathol., 142: 1823-1830, 1993), transforming growth factor alpha (TGF-alpha) (R. P. Evarts, H. Nakatsukasa, E. R. Marsden, Z. Hu, and S. S. Thorgeirsson, Mol. Carcinog., 5: 25-31, 1992), and acidic fibroblast grow...

The objective of this study was to evaluate kinetics and the residual decline of tylosin in milk and plasma of lactating Najdi ewes following single intramuscular injection of tylosin at the dose of 10 mg/kg. Blood and milk samples were collected from the ewes before and at different time intervals after treatment. Tylosin concentrations were determined by microbiological agar plate assay using...

Nowadays, plant allelopathy, as a new type of biological algal and/or bacterial inhibition technology, has attracted extensive attention. Eight substances were isolated and identified from Jussiaea stipulacea Ohwi, five concentration gradients, well control (0, 1.25, 5, 10, 20, 50 mg/L) set, with three parallels in each group, then sampled detected at 24, 48, 72, 96 h. When the was mg/L, rate A...

To establish a method for determining ursolic acid content in Patrinia scabiosifolia Fisch. ex Trevir.; and to investigate the inhibitory effect of Patrinia scabiosifolia Fisch. ex Trevir. extract on in vitro cultured human cervical carcinoma Hela cells. HPLC with Agilent XBP-C18 column (4.6 mm × 250 mm, 5 μm) was used. Mobile phase was acetonitrile-methanol-0.5% ammonium acetate solution (68:1...

Euglycemic (approximately 5.5 mM) hyperinsulinemic (60 mU.m-2.min-1) clamps were performed for 2 h after a 10-h fast and after a prolonged (72-h) fast. Biopsies were obtained from the quadriceps femoris muscle before and after each clamp. The rate of whole body glucose disposal was approximately 50% lower during the clamp after the 72-h fast (P less than or equal to 0.001). The increase in carb...

A study on the distribution patterns of enteropathogenic bacteria polluting the shoreline in Natal, Rio Grande do Norte, Brazil, was carried out based on 72 samples obtained from three storm sewers and adjoining beach locations, Praia do Meio (PM), Areia Preta (AP) and Ponta Negra (PN). From each location, 12 water samples were taken and analyzed for fecal coliforms (FC) and Escherichia coli. I...

Neurohumoral responses have been implicated in the pathogenesis of ischemia-evoked cerebral edema. In a well-characterized animal model of ischemic stroke, the present study was undertaken to 1) study the profile of plasma arginine-vasopressin (AVP), and 2) determine whether osmotherapy with mannitol and various concentrations of hypertonic saline (HS) solutions influence plasma AVP levels. Hal...

Introduction: The Serum/Glucose deprivation -induced cell death in cultured PC12 cells represents a useful in vitro model for the study of brain ischemia and neurodegenerative disorders. Nigella sativa L. has been known as a source of antioxidants. To elucidate the neuroprotective actions of N. sativa extract in vitro, we studied the effect of N. sativa extract on cultured PC12 cells under s...